Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific
Abstract During the austral winter, G-stock humpback whales, Megaptera novaeangliae, migrate to the Tropical Eastern Pacific to breed. To analyse if the whale migration times have changed over time, we analysed 31 years (1988–2018) of arrival and departure times to Gorgona National Park, Colombia, a...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsz251 http://academic.oup.com/icesjms/article-pdf/77/1/109/32429455/fsz251.pdf |
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croxfordunivpr:10.1093/icesjms/fsz251 2024-05-19T07:32:04+00:00 Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific Avila, Isabel Cristina Dormann, Carsten F García, Carolina Payán, Luis Fernando Zorrilla, María Ximena Gilles, Anita 2019 http://dx.doi.org/10.1093/icesjms/fsz251 http://academic.oup.com/icesjms/article-pdf/77/1/109/32429455/fsz251.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 77, issue 1, page 109-118 ISSN 1054-3139 1095-9289 journal-article 2019 croxfordunivpr https://doi.org/10.1093/icesjms/fsz251 2024-05-02T09:32:52Z Abstract During the austral winter, G-stock humpback whales, Megaptera novaeangliae, migrate to the Tropical Eastern Pacific to breed. To analyse if the whale migration times have changed over time, we analysed 31 years (1988–2018) of arrival and departure times to Gorgona National Park, Colombia, an important breeding site. During this period, whales have significantly changed their arrival time, coming now earlier, but their departure time has not changed significantly. Hence, humpback whales now stay 1 month longer than 31 years ago. Humpbacks arrived in Gorgona at the earliest during the beginning of May and stayed at the most until late December. The change observed in the arrival time to breeding grounds could be related to ice sheet mass changes in autumn in Antarctica and increase in population size over the past decades but we were unable to determine which factor is more important in explaining the observed trend. Management decisions in Colombia need to account for a longer stay, specifically restricting anthropogenic activities from 1May to 31December. We urge other researchers to review their data, in case this shift is evident in other regions and management plans need to be updated. Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Megaptera novaeangliae Oxford University Press ICES Journal of Marine Science 77 1 109 118 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract During the austral winter, G-stock humpback whales, Megaptera novaeangliae, migrate to the Tropical Eastern Pacific to breed. To analyse if the whale migration times have changed over time, we analysed 31 years (1988–2018) of arrival and departure times to Gorgona National Park, Colombia, an important breeding site. During this period, whales have significantly changed their arrival time, coming now earlier, but their departure time has not changed significantly. Hence, humpback whales now stay 1 month longer than 31 years ago. Humpbacks arrived in Gorgona at the earliest during the beginning of May and stayed at the most until late December. The change observed in the arrival time to breeding grounds could be related to ice sheet mass changes in autumn in Antarctica and increase in population size over the past decades but we were unable to determine which factor is more important in explaining the observed trend. Management decisions in Colombia need to account for a longer stay, specifically restricting anthropogenic activities from 1May to 31December. We urge other researchers to review their data, in case this shift is evident in other regions and management plans need to be updated. |
author2 |
Gilles, Anita |
format |
Article in Journal/Newspaper |
author |
Avila, Isabel Cristina Dormann, Carsten F García, Carolina Payán, Luis Fernando Zorrilla, María Ximena |
spellingShingle |
Avila, Isabel Cristina Dormann, Carsten F García, Carolina Payán, Luis Fernando Zorrilla, María Ximena Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific |
author_facet |
Avila, Isabel Cristina Dormann, Carsten F García, Carolina Payán, Luis Fernando Zorrilla, María Ximena |
author_sort |
Avila, Isabel Cristina |
title |
Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific |
title_short |
Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific |
title_full |
Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific |
title_fullStr |
Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific |
title_full_unstemmed |
Humpback whales extend their stay in a breeding ground in the Tropical Eastern Pacific |
title_sort |
humpback whales extend their stay in a breeding ground in the tropical eastern pacific |
publisher |
Oxford University Press (OUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1093/icesjms/fsz251 http://academic.oup.com/icesjms/article-pdf/77/1/109/32429455/fsz251.pdf |
genre |
Antarc* Antarctica Ice Sheet Megaptera novaeangliae |
genre_facet |
Antarc* Antarctica Ice Sheet Megaptera novaeangliae |
op_source |
ICES Journal of Marine Science volume 77, issue 1, page 109-118 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsz251 |
container_title |
ICES Journal of Marine Science |
container_volume |
77 |
container_issue |
1 |
container_start_page |
109 |
op_container_end_page |
118 |
_version_ |
1799470010713767936 |